Duncan Hines cake. Why does my Duncan Hines Cake Mix box not have an expiry date, use by or before date
Pretty certain as long as the packaging is in tact and once u open & empty contents double check to see any evidence of intruderers(bugs). It should be all good otherwise.
I can't help but mention that I haven't dunked any Hines for years. (Old Bob Hope joke...) My real answer is that it probably never expires.
It nevers expire but should have a date. Just like can goods, they have a date but only are bad if there is rust on the can.